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F-Distribution
Table - use this calculator instead!

This tool is an equivalent of an F-distribution table and
calculates percentile values for given values on an F-distribution
curve. You must provide the F-value, and the degrees of freedom in
both numerator and denominator. The F-distribution
calc makes it very easy to find the cumulative probability
associated with an F-value.

F-distribution curve

The F-distribution
table is approximated using the following formula:

where

a1
=
0.196854a2
=
0.115194a3
=
0.000344a4
=
0.019527

d1 =
degrees of freedom in numeratord2
=
degrees of freedom in denominator

Example:

What is the percentile on a F-distribution table when the F-value is 2
and the degrees of freedom are both 5?